Copied ZDC_example.xml in calorimeter directory.
Created run_simulation_zdc.sh with ddsim and hepmc inputfile.
Excluded calorimeter/test directory.

	modified:   .gitlab-ci.yml

- this assumes the pipeline trigger is coming on the heels of a npdet
image build

	modified:   trackers/simple_tracking.cxx

	modified:   calorimeters/calorimeters_config.yml

	new file:   calorimeters/calorimeters_config.yml
	new file:   pid/pid_config.yml
	new file:   trackers/trackers_config.yml

	modified:   bin/gen_ci_config

	new file:   bin/gen_ci_config
	new file:   calorimeters/dummy_test2.sh
	deleted:    calorimeters/gen_ci_config

	modified:   ../.gitlab-ci.yml
	modified:   ../README.md
	new file:   gen_ci_config